Author: Jeremiah Penery
Date: 16:05:44 10/23/00
Go up one level in this thread
On October 23, 2000 at 17:04:20, Robert Hyatt wrote:
>On October 23, 2000 at 15:01:07, Jeremiah Penery wrote:
>
>>[Event "?"]
>>[Site "USA"]
>>[Date "1989.??.??"]
>>[Round "2"]
>>[White "Deep Thought"]
>>[Black "Valvo Michael J"]
>>[Result "0-1"]
>>[ECO "C31"]
>>
>>1. e4 e5 2. f4 d5 3. exd5 c6 4. Nc3 exf4 5. Nf3 Bd6 6. d4 Ne7 7.
>>dxc6 Nbxc6 8. d5 Nb4 9. Bc4 0-0 10. a3 b5 11. Bb3 Na6 12. Nxb5 Qa5+
>>13. Nc3 Nc5 14. Ba2 Ba6 15. b4 Qc7 16. bxc5 Rfe8 17. Ne2 Qxc5 18. c4
>>Nxd5 19. Qd4 Qxd4 20. Nxd4 Bc5 21. Kd2 Ne3 22. Kc3 Rac8 23. Bb2 Nxg2
>>24. Raf1 Rcd8 25. Rhg1 Re3+ 26. Kd2 f3 27. Rxf3 Rxf3 28. Rxg2 Rh3
>>29. Kc1 g6 30. a4 Bb7 31. Rf2 Ba8 32. Bb1 Rb8 33. Ba2 Rd3 34. Rf4
>>Rd2 35. Kxd2 Rxb2+ 36. Nc2 Rxa2 37. Nc3 Rb2 38. Rf6 Kg7 39. Rf1 f5
>>40. Nd5 Bxd5 41. cxd5 Rb3 42. h4 Kf6 43. Re1 Rh3 44. Re6+ Kf7 45. a5
>>Rxh4 46. Rc6 Bb4+ 47. Nxb4 Rxb4 48. Rc7+ Kf6
>>0-1
>>
>>[D]r4rk1/p1q1nppp/b2b4/2nP4/1P3p2/P1N2N2/B1P3PP/R1BQK2R w - -
>>
>>This position is at white's 16th move. bxc5 leads to nastiness for white, but
>>is there a better move? Perhaps 16. b5!?, preventing black's light-squared
>>bishop from pointing at f1 temporarily. Or perhaps an immediate Ne2 would be a
>>little better, with the idea of castling to get the king to a safer place.
>>I'm especially interested to know what Gambit-Tiger sees here - does it see the
>>attack coming?
>>
>>Thanks,
>>Jeremiah
>
>
>I think most any program will figure out pretty quickly that white is going
>to have some problems here. Crafty starts off at +3, but gets down to +2
>very quickly as it understands not castling. The eval steadily drops iteration
>by iteration.
>
>Of course, it would _still_ play the move...
This is what I get from my latest modified Crafty 17.13 on a PII-300:
8-> 1:01 0.37 16. bxc5 Rfe8 17. cxd6 Qxc3+ 18. Kf2
Qxa1 19. dxe7 Qxa2 20. d6 Qc4
<search time after this point is not accurate, as I stopped the process for at
least 10 minutes>
9 16:39 0.08 16. bxc5 Nf5 17. Ne4 Rfe8 18. Ng5 Qxc5
19. c4 Rad8 20. Kf1
9 27:33 0.10 16. b5 Na4 17. Nxa4 Bxb5 18. Bb3 Bxa4
19. Bxa4 Qa5+ 20. c3 Qxc3+
9-> 28:41 0.10 16. b5 Na4 17. Nxa4 Bxb5 18. Bb3 Bxa4
19. Bxa4 Qa5+ 20. c3 Qxc3+
10 32:19 0.39 16. b5 Na4 17. Nxa4 Bxb5 18. Bb3 Nxd5
19. Bxd5 Rae8+ 20. Kf2 Bxa4 21. Nd4
10-> 34:11 0.39 16. b5 Na4 17. Nxa4 Bxb5 18. Bb3 Nxd5
19. Bxd5 Rae8+ 20. Kf2 Bxa4 21. Nd4
11 34:36 -- 16. b5
11 40:42 -0.18 16. b5 Na4 17. Nxa4 Bxb5 18. c4 Bxc4
19. Nd2 Bd3 20. Qf3 Bb5 21. Bb3
11 50:00 ++ 16. bxc5!!
11-> 1:00:45 0.21 16. bxc5
12 1:12:58 -0.07 16. bxc5 Rfe8 17. cxd6 Qxc3+ 18. Kf2
Nf5 19. Bxf4 Qc5+ 20. Nd4 Re2+ 21.
Kg1 Nxd4 22. Rb1 Nxc2+
12 1:33:55 0.11 16. b5 Na4 17. Nxa4 Bxb5 18. Nd4 Qa5+
19. c3 Bxa4 20. Qf3 Rfc8 21. O-O Qxc3
22. Qxc3 Rxc3 23. Bxf4 Bxa3
12-> 1:40:26 0.11 16. b5 Na4 17. Nxa4 Bxb5 18. Nd4 Qa5+
19. c3 Bxa4 20. Qf3 Rfc8 21. O-O Qxc3
22. Qxc3 Rxc3 23. Bxf4 Bxa3
13 2:23:07 0.15 16. b5 Na4 17. Ne4 Bxb5 18. c4 Bxc4
19. Bxc4 Qxc4 20. Nxd6 Qa6 21. Bxf4
Nc3 22. Qd4 Nexd5
13-> 2:53:39 0.15 16. b5 Na4 17. Ne4 Bxb5 18. c4 Bxc4
19. Bxc4 Qxc4 20. Nxd6 Qa6 21. Bxf4
Nc3 22. Qd4 Nexd5
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